Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (6): 77 doi: 10.1007/s41365-017-0226-7


Radiation graft of acrylamide onto polyethylene separators for lithium ion batteries

Xiao-Li Miao1,2, Ji-Hao Li1, Qun Xiang2, Jia-Qiang Xu2, Lin-Fan Li1, Jing-Ye Li1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, People’s Republic of China
    2 Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, People’s Republic of China
  • Supported by:

    Supported by National Science Foundation of China (Grants 11575277, 11175234, 11505270, 51473183 and 11475246).

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Xiao-Li Miao, Ji-Hao Li, Qun Xiang, Jia-Qiang Xu, Lin-Fan Li, Jing-Ye Li. Radiation graft of acrylamide onto polyethylene separators for lithium ion batteries.Nuclear Science and Techniques, 2017, 28(6): 77     doi: 10.1007/s41365-017-0226-7


To improve the affinity between separators and electrolyte in lithium-ion battery, microporous polyethylene (PE) separator was grafted of polyacrylamide (PAAm) by radiation. Chemical structure of the PAAmgrafted PE separators (denoted as PE-g-PAAm) was characterized by Fourier transform infrared spectroscopy and
X-ray photoelectron spectroscopy. Properties of the pristine PE and PE-g-PAAm were tested by scanning electron microscope, liquid electrolyte uptake and lithium-ion conductivity. Electrochemical performances of the grafted PE separators (up to 0.76 9 10-3 S/cm of ionic conductivity at room temperature) were much better than pristine PE, and performance of the battery with the grafted separator behaved better than with the virgin PE separator, under the same condition (assembled in Ar-filled glove box).

Key words: Lithium-ion battery, Polyethylene, Acrylamide, Irradiation graft, Separator